<template>
    <el-container class="home-container">
      <!-- 头部区域 -->
      <el-header>
        <div>
          <img src="../assets/logo.png" height="50"/>
          <span>电商后台管理系统</span>
        </div>
        <el-button type="info" @click="logout">退出系统</el-button>
      </el-header>
      <!-- 主体区域 -->
      <el-container>
        <el-aside :width="isCollapse ? '64px' : '200px'">
          <div class="toggleCollapse" @click="toggleCollapse">|||</div>
          <el-menu
            background-color="#333744"
            text-color="#fff"
            active-text-color="#409eff" unique-opened
            :collapse='isCollapse'
            :collapse-transition='false'
            router :default-active="activePath">
            <el-submenu :index="item.id + ''" :key='item.id' v-for='item in menulist'>
              <template slot="title">
                <i :class="iconsObj[item.id]"></i>
                <span>{{item.authName}}</span>
              </template>
              <el-menu-item :index="'/' + subItem.path" :key='subItem.id' v-for='subItem in item.children'
              @click="saveNavState('/'+subItem.path)">
                <template slot="title">
                  <i class="el-icon-menu"></i>
                  <span>{{subItem.authName}}</span>
                </template>
              </el-menu-item>
            </el-submenu>
          </el-menu>
        </el-aside>
        <el-main><router-view></router-view></el-main>
      </el-container>
    </el-container>
</template>

<script>
export default {
  data() {
    return {
      menulist: [],
      iconsObj: {
        '125': 'iconfont icon-user',
        '103': 'iconfont icon-tijikongjian',
        '101': 'iconfont icon-shangpin',
        '102': 'iconfont icon-danju',
        '145': 'iconfont icon-baobiao'
      },
      isCollapse: false,
      activePath: ''
    }
  },
  created() {
    this.getMenuList()
    this.activePath = window.sessionStorage.getItem('activePath')
  },
  methods: {
    logout() {
      // 删除token
      window.sessionStorage.clear()
      this.$router.push('/login')
    },
    async getMenuList() {
      // 请求路径menus 请求方法 get
      let { data: res } = await this.$http.get('menus')
      this.menulist = res.data
      console.log(this.menulist)
    },
    // 控制菜单折叠或展开
    toggleCollapse() {
      this.isCollapse = !this.isCollapse
    },
    // 保存菜单激活状态
    saveNavState(activePath) {
      window.sessionStorage.setItem('activePath', activePath)
      this.activePath = activePath
    }
  }
}
</script>

<style lang="less" scoped>
.home-container {
  height: 100%;
}
.el-header {
  background-color: #373d41;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-left: 0;
  color: #fff;
  font-size: 22px;
  > div {
    display: flex;
    align-items: center;
    span {
      margin-left: 20px;
    }
  }
}

.el-aside {
  background-color: #333744;
  > .el-menu {
    border-right: none;
  }
}

.el-main {
  background-color: #eaedf1;
}

.iconfont {
  margin-right: 10px;
}

.toggleCollapse {
  background-color: #4a5064;
  font-size: 10px;
  line-height: 24px;
  color: #fff;
  text-align: center;
  letter-spacing: 0.2em;
}
</style>
